Man this box is pretty neat, all game processing is done server side so you don't have to upgrade your computer to play new games since your PC's hardware is never used, only your internet connection. This works the same with 360 and PS3 games so you can play games on a PC or TV from either system with this one box. Its pretty much like Netflix for video game consoles. If it works good this thing is cool as fuck. Check the link below for an overview of the box and a streaming video of it being demoed at the Game Developers Conference.
http://g4tv.com/thefeed/blog/post/694247/OnLive-Gaming-Service-Announced-A-New-Dawn-of-Gaming.html
http://g4tv.com/thefeed/blog/post/694247/OnLive-Gaming-Service-Announced-A-New-Dawn-of-Gaming.html